enumerator.c: fix arith_seq_first for Infinity

* enumerator.c (arith_seq_first): fix for Float::INFINITY.

* test/ruby/test_arithmetic_sequence.rb: add tests.

* numeric.c (ruby_float_step_size): export for internal use.

* internal.h: add prototype declaration of ruby_float_step_size.

[ruby-core:90937][Bug #15518]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66947 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/numeric.c b/numeric.c
index 1221eafa9e..a1090ff85d 100644
--- a/numeric.c
+++ b/numeric.c
@@ -2481,7 +2481,7 @@ num_truncate(int argc, VALUE *argv, VALUE num)
     return flo_truncate(argc, argv, rb_Float(num));
 }
 
-static double
+double
 ruby_float_step_size(double beg, double end, double unit, int excl)
 {
     const double epsilon = DBL_EPSILON;